[填空题]Gambling was virtually prohibited except on the ______.

[填空题]Gambling was virtually prohibited except on the ______.

[单项选择]Gambling is lawful in Nevada.
A. enjoyable
B. irresistible
C. legal
D. profitable

[简答题]

PAIN

1 Virtually all animals experience pain. Pain is a distress call from the body signaling some damaging stimulus or internal disorder. It is one of the most important sensations because it is translated into a negative reaction, such as withdrawal from danger. Rare individuals who are born without the ability to feel pain may die from such conditions as a ruptured appendix because they are unaware of the danger.
2 Pain receptors are unspecialized nerve fiber endings that respond to a variety of stimuli signaling real or possible damage to tissues. Some groups of pain receptors respond to specific classes of chemicals released from damaged or inflamed tissue. When pain fibers respond to peptides released by injured cells, this is called slow pain. Fast pain responses--for example, a pinprick or hot or cold stimuli--are a more direct response of the nerve endings to mechanical or thermal stimuli.
3

[单项选择]Virtually everything astronomers known about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that permeates the universe: neutrinos (中微子). With (as its name implies) no electric charge, and negligible mass, the neutrino interacts with other particles so rarely that a neutrino can cross the entire universe, even traversing substantial aggregations of matter, without being absorbed or even deflected. Neutrinos can thus escape from regions of space where light and other kinds of electromagnetic radiation are blocked by matter. Furthermore, neutrinos carry with them information about the site and circumstances of their production: therefore, the detection of cosmic neutrinos could provide new information about a wide variety of cosmic phenomena and about the history of the universe.
But how can scientists detect a particle that interacts so infrequently with other matter Twenty-five years
A. At the Threshold of Neutrino Astronomy.
B. Neutrinos and the History of the Universe.
C. The Creation and the Study of Neutrinos.
D. The DUMAND System and How It Works.

[单项选择]Virtually everything astronomers know about objects outside the solar system is based on the detection of photons-quanta of electromagnetic radiation. Yet there is another form of radiation that permeates the universe: neutrinos. With (as its name implies) no electric charge, and negligible mass, the neutrino interacts with other particles so rarely that a neutrino can cross the entire universe, even traversing substantial aggregations of matter, without being absorbed or even deflected. Neutrinos can thus escape from regions of space where light and other kinds of electromagnetic radiation are blocked by matter. Not a single, validated observation of an extraterrestrial neutrino has so far been produced despite the construction of a string of elaborate observatories, mounted on the earth from Southern India to Utah to South Africa. However, the detection of extraterrestrial neutrinos are of great significance in the study of astronomy. Neutrinos carry with Their information about the
A. get through,
B. pass by.
C. interact with.
D. derive from.

[单项选择]His heavy drinking and fond of gambling makes him a poor role model（）.
A. and fact that he gambles
B. and that he gambles
C. and he gambles which
D. and gambling

[单项选择]Despite his occasional fondness for gambling, he is still considered as a good boy （　）.
A. as the whole
B. for the whole
C. by the whole
D. on the whole

[单项选择]Gambling, despite being a well known highly risky pursuit that has caused many tragedies, does not scare gamblers away; instead, many consciously join the legion of gamblers, in spite of possible failure in store for them.
How does a gambler get bogged down in such a risky occupation Most novices do not embrace an ambition to get rich through gambling. Instead, they might think gambling is merely an exciting game through which they can try their luck and bring excitement to their dull lives. Often, they win a small sum at the first several tries, and then became bold, daring to play for larger stakes. With certain encouraging "achievements", they are now confident of their good luck and gambling skill. At this point, they are at a crossroads: a step forward to become a professional gambler, or a step backward to return to normal life.
Unfortunately, most of them get bogged down in gambling, because the greedy notion of getting something for nothing is their underlying mo
A. analyze gambler’s psychological reason of gambling.
B. criticize gamblers and gambling.
C. warn gamblers to stay away from gambling.
D. introduce the history of gamblin